. 2023 Feb 15;24(4):3934. doi: 10.3390/ijms24043934

Table 2.

Quality control data including recovery, intra-day variability and inter-variability of xanthone and anthocyanin in mangosteen peel as determined by UPLC-MS/MS.

Compound	Recovery						Intra-Day Variability ^c		Inter-Day Variability ^c
Compound	Original (μg)	Spiked (μg)	Found (μg)	Recovery ^a (%)	Mean ± SD (%)	RSD ^b (%)	Contents (μg/g)	RSD (%) ^b	Contents (μg/g)	RSD (%) ^b
Xanthone
Garcinone C	519.06	200	698.06	89.50	91.64 ± 3.02	3.30	503.66 ± 12.74	2.53	516.47 ± 18.96	3.67
Garcinone C	519.06	2000	2394.58	93.78	91.64 ± 3.02	3.30	503.66 ± 12.74	2.53	516.47 ± 18.96	3.67
Garcinone D	467.83	200	656.34	94.25	95.93 ± 2.37	2.47	466.47 ± 6.19	1.33	475.17 ± 9.48	1.99
Garcinone D	467.83	2000	2419.92	97.60	95.93 ± 2.37	2.47	466.47 ± 6.19	1.33	475.17 ± 9.48	1.99
γ-mangostin	11,145.09	4000	14,980.29	95.88	96.68 ± 1.12	1.16	10,715.21 ± 307.69	2.87	11,441.87 ± 237.96	2.08
γ-mangostin	11,145.09	40,000	50,133.09	97.47	96.68 ± 1.12	1.16	10,715.21 ± 307.69	2.87	11,441.87 ± 237.96	2.08
8-desoxygartanin	1492.26	400	1878.43	96.54	97.66 ± 1.57	1.61	1474.83 ± 16.79	1.14	1504.75 ± 24.03	1.60
8-desoxygartanin	1492.26	4000	5443.07	98.77	97.66 ± 1.57	1.61	1474.83 ± 16.79	1.14	1504.75 ± 24.03	1.60
Gartanin	2392.29	400	2761.47	92.30	93.98 ± 2.38	2.53	2368.08 ± 61.95	2.62	2436.52 ± 38.09	1.56
Gartanin	2392.29	4000	6218.75	95.66	93.98 ± 2.38	2.53	2368.08 ± 61.95	2.62	2436.52 ± 38.09	1.56
α-mangostin	51,044.48	5000	55,805.98	95.23	96.54 ± 1.85	1.91	50,232.81 ± 1102.29	2.19	51,909.35 ± 1180.10	2.27
α-mangostin	51,044.48	55,000	104,856.48	97.84	96.54 ± 1.85	1.91	50,232.81 ± 1102.29	2.19	51,909.35 ± 1180.10	2.27
β-mangostin	1512.00	400	1866.35	88.59	90.34 ± 2.48	2.74	1510.61 ± 14.12	0.93	1501.42 ± 27.69	1.84
β-mangostin	1512.00	4000	5195.66	92.09	90.34 ± 2.48	2.74	1510.61 ± 14.12	0.93	1501.42 ± 27.69	1.84
Anthocyanin
Cyanidin-3- sophoroside	2903.88	500	3362.03	91.63	93.15 ± 2.14	2.30	2838.83 ± 97.40	3.43	2926.84 ± 108.23	3.70
Cyanidin-3- sophoroside	2903.88	5000	7636.88	94.66	93.15 ± 2.14	2.30	2838.83 ± 97.40	3.43	2926.84 ± 108.23	3.70
Cyanidin-3- glucoside	19.76	10	28.81	90.48	88.37 ± 2.99	3.38	19.27 ± 0.57	2.94	20.12 ± 0.52	2.60
Cyanidin-3- glucoside	19.76	100	106.01	86.25	88.37 ± 2.99	3.38	19.27 ± 0.57	2.94	20.12 ± 0.52	2.60

^a Recovery (%) = (amount of standard found—original amount in sample)/amount of standard spiked × 100. ^b Relative standard deviation (%) = (standard deviation/mean) × 100. ^c Mean of triplicate analyses ± standard deviation.